Commit 75e1a246 authored by Ard Biesheuvel's avatar Ard Biesheuvel
Browse files

efi: libstub: Undeprecate the command line initrd loader 



The initrd= command line loader can be useful for development, but it
was limited to loading files from the same file system as the loaded
kernel (and it didn't work on x86 mixed mode).

As both issues have been fixed, and the initrd= can now be used with
files residing on any simple file system exposed by the EFI firmware,
let's permit it to be enabled on RISC-V and LoongArch, which did not
support it up to this point.

Note that LoadFile2 remains the preferred option, as it is much simpler
to use and implement, but generic loaders (including the UEFI shell) may
not implement this so there, initrd= can now be used as well (if enabled
in the build)

Signed-off-by: default avatarArd Biesheuvel <ardb@kernel.org>
parent f8a31244

drivers/firmware/efi/Kconfig

+8 −5
Original line number Diff line number Diff line
@@ -143,13 +143,16 @@ config EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER 
	bool "Enable the command line initrd loader" if !X86

	depends on EFI_STUB && (EFI_GENERIC_STUB || X86)

	default y if X86

	depends on !RISCV && !LOONGARCH

	help

	  Select this config option to add support for the initrd= command

	  line parameter, allowing an initrd that resides on the same volume

	  as the kernel image to be loaded into memory.



	  This method is deprecated.

	  line parameter, allowing an initrd to be loaded into memory that

	  resides on a file system backed by an implementation of

	  EFI_SIMPLE_FILE_SYSTEM_PROTOCOL.



	  This method has been superseded by the simpler LoadFile2 based

	  initrd loading method, but the initrd= loader is retained as it

	  can be used from the UEFI Shell or other generic loaders that

	  don't implement the Linux specific LoadFile2 method.



config EFI_BOOTLOADER_CONTROL

	tristate "EFI Bootloader Control"